Manifold



g 1932- M. L. CARPENTIER ETAL 1,872,673

MANIFOLD Filed Aug. 22, 1929 5 Sheets-Sheet 2 INVENTOR MELBOURNE L. CARPENT/ER BYNUOHN 5. MACA ULEJX J5 5 i ATTORNEY 1932- M. L. CARPENTIER ET AL 7 MANIFOLD Filed Aug. 22,1929 3 Sheets-Sheet 3 INVENTOR MELBOURNE L. CARPENTER c/OHN 5. MA CAULEY J5.

fi ATTORNEY Patented Aug. 23, 1932 UNITED" STATES PATEN "oF icE MELBOURNE L. CARPENTIEB, 011 DETROIT, AND JOHN B. MAcAULEYf'J Bn, OI QROSSE POINT VILLAGE, MICHIGAN, ASSIGNORS TO CHRYSLER CORPORATION, OF DETROIT,

MICHIGAN, A CORPORATION OF l Maureen) Application filed new 22,1929. serial no; 387,606.

folding, particularly the intake conduit thereof; for use in conjunction with a down-draft carbureter; to provide a manifold in which a drain sump is provided for collecting the liquid fuel which drains from the .walls of 10 the manifold; to provide a manifold in which the fuel connecting sump is provided with an electric vaporizer for vaporizing the excess fuel and to provide an improved control valve for conducting the exhaust gas directly to the exhaust'pipe when'in one position, and when in another position, to direct the exhaust gases around the intake manifold so as to heat the same.

An illustrative embodiment of this inven tion is shown in the accompanying drawings in which: I

Fig. l is a top plan view of the improved manifold with the end portions of the exhaust conduit broken away. a

Fig. 2 is a view in front elevation of the same with a portion thereof in section so as to show the interior construction of the'in-v take conduit.

3 is a sectional view taken on the line 33 ofFig; 1 with a down-draft carbureter shown in position on the intake conduit.

Fig. Q is a sectional view of the same taken on the line44 of Fig. 1.

Fig. 5 is a sectional view of a modified form of intake conduit showing the adaptation to the structure of an electric vaporizer.

Fig. 6 is a View taken on line 6'6 of Fig. 4 looking in the direction indicated by the arrows.

Fig. 7 is a perspective view of thebypass value shown in section in Figs. 3 and In the constructions shown in the drawings, the improved manifold comprises a substantially horizontally disposed intake conduit 6 of tubular construction which is bowed upwardly from the medial part thereof and whose ends are bent inwardly and provided with flanges 7 and 8 which are adapted tofbe attached to the intake of an internal combustion engine 9. A substantially vertically disposed conduit 10, also of tubular construetion, is integrally formed on the top medial part of the conduit 6 with the lower end thereof 11 communicating with the conduit 6. The top end of-the'conduit' is provided with a laterally extending flange 12 which is adapted to receive and support a down-draft carbureter 13.

The inside lower wall of the conduit 6, at a point directly beneath the lower end of the conduit 10, is provided with a shallow defor liquid fuel which drains from the walls of the intake conduits. A discharge outlet 15 provides communication between the sump 14 and the outside atmosphere, a drain pipe 16 being provided on the lower end of the discharge outlet '15'for conducting the fuel away from the carbureter and to a'point v preferably beneath the dust pans usually provided along the sides of the engine.

I The medial part of the intake conduit 6 has a housing 17 integrally formed therearound, and in spaced relation thereto, so asto provide a passageway 18 which extends transversely to the axis of the conduit'G and which is open on the inner face thereof above and below said conduit. The inner face of the conduit 6, on that portion thereof within the housing 17, is provided with an axially extending rib 19, the face of which is flush with the faces 20 and 21 of the housing 17 that is, these faces are all in the same plane.

An exhaust conduit '22 is provided inwardl toward the engine "from the housing 17 an the medial part of said exhaust manifoldis provided with a depending ortion 23, the lower end of which is provi' ed with a laterally extending flange 24'to which an 7 90 exhaust pipe 25 is secured by means of cap screws 26 and 27. The outer face of the dependinu' portion 23 of the exhaust conduit is adapted to register with, and tightly -fit against the faces 20 and '21 of'the housing 17, and are secured together by cap screws 23A. A circular opening 28 is provided in this outer side of the ex haust manifold for receiving the'outerend of a valve 29, the inner end of which abuts against the inner wall ofthe portion 2? The 100 pression 14 which serves as a collecting sump ing the valve in one of its positions. The

other end of the helical compression spring 34 is attached to a clip 35 which is secured by a cap screw 36 to a boss 37 formed on the inner side of the manifold. The arm 33 is adapted to have manually operable connections attached thereto for turning it through an arc of 90 degrees so as to move the valve 29 to either of two positions. These manual controls preferably terminate on the instru ment board of thevehicle dash.

The valve 29 comprises a head portion 38 on the outer face of which is integrally formed an outwardly projecting fin 39, which extends radially on .diametrically opposite .sides from the valve stem 30. The outer face of the fin 39 fits snugly against the outer face of the rib 19, said faces being parallel to each other when assembled. The head 38 of the valve supports two axially extending skirt portions 40 and 41 which are semi-circular in. shape at their terminating ends, said skirt portions being in. spaced relation to each other so as to provide a diametrically extending passageway through the valve between the skirts. The skirt portions, inward from their terminating semi-circular ends, slope inwardly toward the axisof the valve stem 30, so that when the fin 39 is horizontal and inregistry with the rib 19, communication is provided from the exhaust conduit downwardly and outwardly into thepassageway .18 of the housing 17, around the intake conduit 6 and then back underneath the oppo site sloping sideof the valve skirt as shown by the arrows in Fig. 3 of the drawings. An electric vaporizer 14' is preferably provided in the depression 14 for vaporizing the fuel which accumulates therein.

' In the modified construction shown in Fig. of the drawings thesump into which the liquid fuel drains from the walls of the conduits is of greater depth than that shown in the preferable embodiment and forms a com-.

. bined drain sump and vaporizing chamber 45 and into the bottomof which is threaded an electric vaporizer 46. The vaporizer 46 base. binding post 47 on the lower exterior end to which, suitable electric-wiring may be secured. Theside wall of the sump 45, at a point spaced upwardly from the bottom. is

rovided with'a discharge outlet 48 which limits the amount of fuel which may accumu-,

. wardly inclined end port1ons adapted to be late in the dl am sump.

In the operation of this manifold, it is secured to the side of an internal combustion engine in the, usual manner and the downdraft carbureter 13 mounted on the upper end ofthe intake conduit 10. When the motor is cold and is'first turned over to start, some of the fuel vapor is condensed on the side walls of the conduits and 6. This condensed fuel drains into the collecting sump 14, due to the upwardly bowed ends of the conduit 6, and isdischarged from said sump through the outlet and pipe 16 so that the engine does not become choked and clogged with an excess of raw as.

In order to acilitate and speed up the heating of the intake conduits, the valve 29 is turned to the position shown in Fig. 3 of the drawings so as to cause the exhaust gases to pass out through the side of the exhaust manifold into the passageway 18 of the housing 17, thence around the conduit 6 and then back to the exhaust pipe 25. 1

As 'soon as the intake conduits have been heated up, the valve 29 is rotated one quarter turn to the position shown in Fig. 4 of the drawings. When in such position the head of ,the valve closes the opening into the passageway 18 and the exhaust gases pass directly downward between the spaced skirts of the valve into the exhaust pipe as shown by the arrows in Fig. 4. 4

In the modified form shown ,in Fig. 5 of the drawings, the excess condensed fuel drains into the chamber until it rises to the level of the discharge outlet 48. The electric vaporizer 46 is connected to the clectriccircuit of the car and the action of the vaporizer quickly heats up and vaporizes the fuel collected in the bottom of the sump. Y

Although but one specific embodiment and one modification of this invention have been shown and described, it will be understood that numerous details of the construction shown may be altered or omitted without departing from the spirit of this invention, as defined by the following claims.

We claim:

1. A manifold for an internal combustion engine comprising a conduit adapted to be attached to the intake of the engine and having end portions bowed upwardly slightly from its medial part, an upright conduit having its lower end communicating with said first mentioned conduit and its upper end adapted to support a down-draft carburetor, said first mentioned conduit having a depression in the inner surface of the lower side wall of its medial part for receiving liquid fuel drained from the walls of said conduits and a discharge outlet for draining the liquid from said depression. I

2. A manifold for an internal combustion engine comprising a substantially horizontally disposed conduit having slightly upattached to the intake of the engine, a substantially vertically disposed conduit having its lower end communicating with said first mentioned conduit and its upper end adapted to support a down-draft carbureter, said first mentioned conduit having a depression in the inner surface of the lower side wall thereof for receiving liquid fuel drained from the walls of said conduits and a discharge outlet providing communication between said depression and the outside atmosphere for draining the liquid from said depression.

3. A manifold for an internal combustion engine comprising a substantially horizontally disposed conduit having its ends adapted to be attached to the intake of the engine, the respectively opposite end portions of said conduit being bowed upwardly from the medial part thereof, a substantially vertically disposed conduit having its lower end communicating with the medial part of said first mentioned conduit and its upper end adapted to support a down-draft carbureter; said first mentioned conduit having a depression in the lower inside wall thereof for receiving liquid fuel draining from the walls of said conduits and a discharge outlet for draining the liquid from said depression.

4. A manifold for an internal combustion engine comprising a substantially horizontally disposed conduit having end portions bowed upwardly from the medial part thereof, a substantially vertically disposed conduit having its lower end communicating with said first mentioned conduit at the medial top side thereof for supporting a downdraft carbureter on the upper end thereof,

the lower inside wall of the medial part of said first mentioned conduit having a. depression therein at the inner extremities of the bowed portions of the conduit for receiving liquid fuel draining from the walls of said conduits and a discharge outlet providing communication between said depression and the outside atmosphere for draining the liquid from said depression.

5. A manifold for an internal combustion engine comprising a substantially horizontal ly disposed conduit adapted to be attached to the intake of the engine, a substantially vertically disposed conduit having its lower end communicating with said first mentioned conduit and its upper end adapted to support a down-draft carburetor, said first mentionedconduit having a depression in the lower 111-" side wall thereof for receiving liquid fuel draining from the walls of said conduits and an electric vaporizer in said depression for vaporizing the liquid fuel therein.

6. A manifold for an internal combustion engine comprising a substantially horizontally disposed conduit having its ends adapted to be attached to the intake of the engine,

1 said cond f t being bowed upwardly from the medial part thereof, a substantiall verticallydisposed conduit having its ower end communicating with the medial partof said first mentioned conduit and its upper end adapted to support a. down-draft carburetor, said first mentioned conduit having a depressionin the lower inside wall thereof in registration with the outlet of the vertically dis posed conduit for receiving liquid fuel draining from the wallsof said conduits, and an electric vaporizer in said depression for vaporizing the liquid fuel therein.

7. A manifold for an internal combustion engine comprising a substantially-horizontally disposed conduit adapted to be attached .to the intake of the engine, a substantially verticallydispos'ed conduit having its lower end communicating with said first mentioned conduit and its upper end adapted to support a down-draftcarbureter, said first memtioned conduit having a depression in the lower side wall thereof for receiving liquid fuel draining from the walls of saidconduits, an electric vaporizer in said depression for vaporizing the liquid fuel therein, and a discharge outlet spaced from thebottom of said depression for limiting the depth of liquid in said depression. a

8. A manifold for an internal combustion engine comprising. a substantially horizontally disposed conduit having its'ends; adapted to be attached to the intake of the engine, said conduit being bowed upwardly from the medial part thereof, a substantially vertically disposed conduit havingits lower end communicating with the medial part of said first mentioned conduit and itsu per-.endadapted to support a down-draft carbureter, said first mentioned conduit having a depression inthe lower inside wall thereof for .receivingliquid fuel draining from the walls of said conduits, an electric vaporizer'in said depression for vaporizing the liquid fuel therein, and a discharge outlet spaced from the bottom of said depression for limiting the depth of liquid in said depression. a

9. A manifold for an internal combustion engine comprising a substantially horizon tally disposed conduit adapted to be attache T to the intake of the engine a substantially vertically disposed conduit having its lower end communicating with said first mentioned conduit and its upper end adapted to support a down-draft carbureter, said first mentioned conduit having a depression in the lower inside Wall thereof disposed directly beneath the outlet of said vertically extending conduit-forreceiving liquid fuel drained from the walls of said conduits and a discharge outlet for draining the liquid from said-depression.

10. A manifold for an internal combustion engine comprising a conduit for exhaust gases, a fuel intake conduit ad acent said exhaust conduit, a housing surrounding said inxiii 9 position loslngcommunication to said housa valve between said exhaust conduit and said exhaust pipe movable to" two positions and including a cup-shaped member havingia diametric passage anddiametricall'y spaced inclined side portionsfsaid valve when in one ing passageway and providing direct commumcation through said passage between said exhaust conduit and exhaust pipe, and when in the other position closing direct communication between said exhaust conduit and exhaust pipe and establishing communication therebetween through said housing passageway around said intake conduit.

11. A manifold for an internal combustion engine comprising a conduit for exhaust gases, a fuel intake conduit adjacent said exhaust conduit, a housing surrounding said intake conduit in spaced relation thereto providing a passageway extending transversely to the axis of said conduit, an exhaustpipe communicating with said exhaust conduit and a valve between said exhaust conduit and said exhaust pipe comprising a head, a pair of skirts on said head in spaced relation to each other, the terminatin edges of said skirts being semi-circular in shape with respect to the axis of said head, the walls of said skirts sloping inwardly from their terminating semi-circular edges toward the axis of said head, said valve being movable to two positions, said valve when in one position closing communication to said housing passage" way and providing direct communication between said exhaust conduit andexhaust pipe between said spaced skirts, and when in the other position closing direct communication between said exhaust conduit and exhaust pipe and establishing communication theretween through said housing passageway around said intake conduit.

MELBOURNE L. CARPENTIER.

JOHN B. MACAULEY, JR. 

